Subject	most earthquake
Predicate	happen at
Object	plate boundaries
Modality	Modality Occurrences
Polarity	POSITIVE
Plausibility	0.9338
Neighborhood Sigma	0.9402
Local Sigma	1.0000
Example Sentences	Sentence Occurrences Source most earthquakes happen at plate boundaries 8 Google Autocomplete most earthquakes and volcanoes happen at plate boundaries 1 Answers.com Questions